package ooday05test;

public class StaticFinalDemo {
    public static void main(String[] args) {
        //演示static final 常量的演示
        System.out.println(Loo.num);
        Loo.num=990;
        System.out.println(Loo.num);
        System.out.println(Loo.num);
        Loo.num=990;
        System.out.println(Loo.PI);
        System.out.println(Loo.COUNT);
    }
}
class Loo{
    public static  int num;
    public static final int COUNT=9;
    public static final double PI=3.14;

    static {
        num=99;
    }
}